Description Unit CatM is an international CatM and NB-IoT dual-mode wireless communication unit based on the SIM7080G module solution. The Unit CatM covers most global CatM and NB-IoT frequency bands and can adapt to different data rate and throughput requirements for IoT communication. The Unit CatM uses serial communication with AT command control, supports multiple communication protocols, and integrates an SMA external antenna interface to improve communication quality and signal stability. It is suitable for remote control, remote monitoring, telemedicine, and remote data collection or cloud upload applications. Features Unit CatM wireless communication unit based on the SIM7080G module solution. Supports CatM and NB-IoT dual-mode communication. Covers most global CatM and NB-IoT frequency bands. UART interface with AT command control. Cat-M speed: uplink 1119Kbps, downlink 589Kbps. NB-IoT speed: uplink 150Kbps, downlink 136Kbps. Supported protocols include TCP, UDP, HTTP, HTTPS, TLS, DTLS, PING, LWM2M, COAP, MQTT, and more. Nano SIM card slot specification. SMA external antenna interface for improved communication quality and signal stability. Development support for Arduino and UIFlow. Specifications Specification Parameter Module Model SIM7080G Supported CAT-M Bands B1/B2/B3/B4/B5/B8/B12/B13/B14/B18/B19/B20/B25/B26/B27/B28/B66/B85 Supported CAT-NB Bands B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66/B71/B85 Cat-M Uplink/Downlink Speed Uplink: 1119Kbps, Downlink: 589Kbps NB-IoT Uplink/Downlink Speed Uplink: 150Kbps, Downlink: 136Kbps RF Power Class Class 5, typical 21dbm Power Consumption Standby: 49.4mA, network peak: 249mA Communication Interface UART: baud 115200 8N1 Card Slot Nano SIM Net Weight 19.4g Gross Weight 44g Product Size 72 x 24 x 8mm Package Size 136 x 92 x 11mm Applications Remote data collection and cloud upload with the Unit CatM. Remote control systems using CatM or NB-IoT connectivity. Remote monitoring devices that require cellular data communication. Telemedicine equipment using Unit CatM network connectivity. IoT terminals that need SIM7080G-based wide-area wireless communication. Product List 1 x Unit CatM 1 x HY2.0-4P Grove connection cable (20cm) 1 x Hex wrench 1 x External SMA antenna Other Content PinMap Port Black Red Yellow White PORT.C GND 5V UART_RX UART_TX Communication Workflow The Unit CatM is controlled through UART AT commands, so host controllers can configure network attachment, data transmission, and supported application protocols through serial command exchanges. Resources Unit CatM product document Unit CatM Arduino library and examples SIM7080 series AT command manual SIM7080 series specification PDF SIM7080 MQTT application note SIM7080 HTTP(S) application note Unit CatM schematic image Unit CatM PDF document FAQ What network modes does Unit CatM support? The Unit CatM supports CatM and NB-IoT dual-mode communication. Which SIM card size does Unit CatM use? The Unit CatM uses a Nano SIM card slot specification. How is Unit CatM controlled? It uses a UART interface and AT command control. Which protocols are supported? The supported protocols include TCP, UDP, HTTP, HTTPS, TLS, DTLS, PING, LWM2M, COAP, MQTT, and more. What is included with Unit CatM? The package includes 1 x Unit CatM, 1 x HY2.0-4P Grove connection cable (20cm), 1 x Hex wrench, and 1 x External SMA antenna.
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